Milk-cooler.



P. E. CRANSTON.

MILK COOLER.

APPLICATlON man JULY 3. I914.

Patented Feb. 22, 1916.

TJ'NTTED STATES PATENT @FFTQE.

PATTERSON E. CRANSTON, OF RICHLAND CENTER, WISCONSIN.

MILK-COOLER.

Application filed July 3, 1914.

it appertains to make and use the same.

This invention relates to appliances for the coohng of mllk andpartlcularly partakes of the nature of improvements over thatconstruction of milk coolers for which Letters Patent 1,089,692 weregranted to me on March 10, 191%.

As a principal object this invention contemplates the provision of acooler of conical formation in which special provision is made to exposea larger portion of the surface adapted to be traversed by the milk tothe action of the cooling agent than has been heretofore known.

A further object is to provide means formed upon the deflector diskdisclosed in the above mentioned patent whereby all of the milk will beforced to pass over the entire cooling surface of the cooler thusobviating a difliculty heretofore met with and to also provide apractical means for the escape of the cooling agent.

The above and additional objects are accomplished by such means as areillustrated in the accompanying drawing, described in the followingspecification and then more particularly pointed out in the claim whichis appended hereto and forms a part of this application.

With reference to the drawing, wherein I have illustrated the embodimentof my invention as it is reduced to practice and throughout which likecharacters of reference designate similar parts, the figure shown is avertical sectional view through a form of cooler by the use of which theforegoing objects may be accomplished.

Proceeding now to the description of the drawing and having particularreference to the figure, the numeral 5 indicates the lateral surface ofthe outer cone having the bottom 6 and an outer peripheral flange 7formed integral therewith. The upper portion of the outer cone 5terminates in an upstanding tubular portion or conical neck 8 whichtapers from the bottom to the top Specification of Letters Patent.

Patented Feb. 22, 1916.

Serial No. 849,005.

and is adapted to carry or support in a manner somewhat similar to thatdisclosed in my previous mentioned patent a reservoir 9 and a deflectorcup 10.

The reservoir 9 is formed with the preferably frusto conical wall 11 anda conical bottom 12 sloping from the center of the reservoir downwardlyand outwardly to the point of connection with the wall 11, while thebottom 12 is also adapted to carry the depending integral sleeve 13 toengage with the upper portion of the tubular member 8 in such a manneras to firmly secure the reservoir thereupon. Suitable apertures let areprovided in the bottom 12 at a point immediately interior of the wall 11and are adapted to convey the milk which the reservoir 9 is designed tocontain, downwardly into the deflector cup 10. This deflector cup isprovided with a conical bottom 15 oppositely disposed to the bottom ofthe reservoir and carries the upstanding sleeve 16 whereby the cup isremovably positioned upon the tubular member 8. Suitable apertures 17are formed in the bottom of the cup near the base'of the upstandingsleeve 16 in such manner that the milk received from the reservoir maybe transmitted directly to the upper portion of the outer cone 5 and theannular flange 18 is formed upon the outer edge of the cup to serve apurpose to be hereinafter more fully described. The outer cone 5 ispreferably formed of some light sheet metal which may be peculiarlyconductive of cold and is formed with the spiral glove 28 having itsconvolutions accordingly spaced apart. The inlet pipe 20 through whichthe cooling agent is admitted to the interior of the outer cone 5connects therewith near the bottom 6. The flange 7 which forms a gutteraround the base of the cooler is suitably apertured as at 23 to receivethe outlet spout 24 through which the milk after being cooled is adaptedto be drained out into the desired receptacle. Within the outer cone 5and secured to the bottom 6 thereof is the inner cone 25 which unlikethat construction disclosed in my above mentioned patent does notcontact 1 with the outer cone 5 or with the grooves 19 formed therein.This inner cone 25 has the further point of difference from the abovenamed patent in that its apex is not broken off but is apertured as at26 to receive the escape pipe 27 which is secured to the inner wall ofthis cone and projects through the top thereof into the tubular portion8. The escape pipe 27 communicates at one of its ends with the spacedtop left between the two cones and has its opposite end leading to theexterior of the cooler adjacent its bottom.

The operation of my device by which the milk is permitted to come incontact with a larger portion of the conical surface of the outer cone 5which has been subjected to the action of the cooling agent is asfollows. The inlet pipe 20 which is adapted to be connected to asuitable source of water or other cooling liquid supply conducts thewater to the interior of the outer cone 5 thus permitting the coolingagent to come in contact with the inner surface of the outer cone 5 byfilling the hollow space between the outer cone 5 and inner cone 25until the water level rises above the escape pipe 27 through which it isthen conducted to the exterior of the cooler to make room for theentrance of fresh liquid through the pipe 20 since by the time thecooling agent reaches the tubular member 8 it has absorbed the heatcalories of the milk flowing on the outer surface of the outer cone andhas accordingly no further utility. The milk with which the reservoir 9is filled passes downwardly into the deflector cup 10 through theapertures 14k and thence passes through the aperture 17 to outer surfaceof the outer cone and instead of traversing grooves such as disclosed inmy patent already referred to is permitted to flow directly into thegutter provided by the flange 7' from which it may be drained offthrough the outlet 24. By this means the outer surface of the outer conewhich is disposed between the grooves is of equal service as the groovesthemselves in cooling the milk, a condition not utilized heretofore.

In the construction previously described a much smaller quantity ofcooling agent is needed owing to the provision of the inner cone 25. Aportion of the milk will of course follow the path of the spiral groovebut the intermediate surface 5 of the outer cone will also be broughtinto use owing to the shallowness of the groove so that the coursepursued by the milk in passing from the reservoir 9 to the spout 24 willcover the entire outer surface of the outer cone while also spiralingaround the cone to some extent, this spiral path thus permitting themilk to come in contact with the cool material for a longer space oftime than is permitted by a more direct course.

The provision of the annular flange 18 formed upon the deflector cup 10prevents any of the milk from flowing over the outer edge of the bottom15 which if permitted would give the milk a much shorter time of contactwith the cool surface of the outer cone, as the milk which would followthis course would reach the cool surface at a point some distance belowthat reached by the milk flowing through the regular channels afiordedby the apertures 17.

iVhile in the foregoing however, I have thus illustrated in the drawingand de scribed in the specification such combination and arrangement ofelements as constitute the preferred embodiment of my invention I desireto emphasize the fact that I may make such minor changes in the mattersof proportion and degree, in later adaptations of my device as shall notalter the spirit of my invention as defined in the appended claim.

What I claim is:

A milk cooler, comprising anouter cone having shallow inwardly indentedgrooves therein, a conical neck upon. the upper end of said cone, areservoir upon said neck above said cone and disposed thereover, adeflector cup upon said neck beneath said reservoir for transmitting themilk flowing from said reservoir to the top of said cone to cause themilk to come in contact with all portions of the cooled surfaces of thecone, an inner cone within said outer cone and spaced therefrom toprovide a compartment there between, said inner cone having a closedupper end extending into said neck, a bottom connecting the bases ofsaid cones, means for filling said compartment between said cones with acooling agent, means for receiving the cooled milk at the bottom of saidouter cone, means for draining the milk from said receiving means, andan outlet pipe upon the inner wall of said inner cone projecting throughthe closed end of said inner cone and into said neck for conveying thewarmer portions of said cooling agent from said neck to the exterior ofsaid cooler.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

PATTERSON E. CRANSTON.

Witnesses MAY ROBBINS, HATTI TURNIPSEED.

7 Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. C.

